/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Utilities.h
Approximate Asin(X). Like AsinApprox but with a crossover toFMath::Asinfor larger input magnitudes.
namespace Chaos { namespace Utilities { template<typename T, int Order> T Chaos::Utilities::AsinEstCrossover ( const T X, const T Crossover ) } }